javascript - How to get push id uniquely -

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i'm building forum, , i'm in step of views. have (simplified) code:

 //setting views //adding them.. $scope.views = $firebaseobject(refservice.ref().child("topics")) refservice.ref().child("topics").once("value", function(snapshot) {      snapshot.foreach(function(childsnapshot) {       var key = childsnapshot.key();       var childdata = childsnapshot.val();         if(childdata.datecreated == $stateparams.date && childdata.email == $stateparams.email){             refservice.ref().child("topics").child(childdata.pushkey).child("views").child(currentauth.uid).set({                 views : true             })         }     }) })  //viewing them $scope.viewableview = $firebaseobject(refservice.ref().child("topics"))

as can see adding views pretty easy job. , did correctly. problem displaying number of views, , have using angularfire's $firebaseobject, or $firebasearray... here structure in database:

{   "topics" : {     "-kg9rdnlzksjdilfaxwh" : {       "avatar" : "http://cs624223.vk.me/v624223037/2b1bb/grtkddkmxiw.jpg",       "datecreated" : 1461544873669,       "email" : "abogale2@gmail.com",       "title" : "check",       "uid" : "3caf2136-7a2d-4ae4-a4a9-119f2b08133c",       "username" : "bruhbrhu",       "value" : "check",       "views" : {         "3caf2136-7a2d-4ae4-a4a9-119f2b08133c" : {           "views" : true         }       },       "pushkey" : "-kg9rdnlzksjdilfaxwh"     }   },   "userauthinfo" : {     "3caf2136-7a2d-4ae4-a4a9-119f2b08133c" : {       "bronzebadge" : 0,       "description" : "just wierd 15 year old coder...",       "email" : "abogale2@gmail.com",       "goldbadge" : 0,       "image" : "http://cs624223.vk.me/v624223037/2b1bb/grtkddkmxiw.jpg",       "moderator" : false,       "password" : "kfucq1yedoi1gengp6i1kq==",       "platinumbadge" : 0,       "silverbadge" : 0,       "uid" : "3caf2136-7a2d-4ae4-a4a9-119f2b08133c",       "username" : "bruhbrhu"     }   } }

as can see used push(), topic.. concern how view topics! please help! can't think of "algorithm" it!

mind you, of topics have unique id's. have specific id user in.

this worked me:

 refservice.ref().child("topics").once("value", function(snapshot) {                     snapshot.foreach(function(childsnapshot) {                       var key = childsnapshot.key();                       var childdata = childsnapshot.val();                       if(childdata.datecreated == $stateparams.date && childdata.email == $stateparams.email){                             refservice.ref().child("topics").child(childdata.pushkey).child("views").on("value", function(snapshot){                                 console.log(snapshot.numchildren())                                 $scope.countviews = snapshot.numchildren();                             })                         }                     })                 })

i dont know how somehow $scope.countviews, became 3 way binded html, shows!


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